RESPONSE OF CELLS WITH 3, 4, AND 5 MM THICKNESSES ALEXANDRE DYCHKANT 11/27/2018 JUST BAKED IN NICADD KITCHEN FOR YOU!

JUST BAKED IN NICADD KITCHEN FOR YOU! CELLS AND FIBERS ALL HEXAGONAL CELLS WITH 9.4 CM² AREA WERE MADE FROM THE SAME PIECE OF ELGEN TECHNOLOGY CASTING SCINTILLATOR EJ-200 WITH 5.5 MM AVERAGE THICKNESS. IT WAS EIGHT CELLS IN EACH OF 3.0, 4.0, OR 5.0 MM THICKNESS SET. THE MACHINED SURFACES WERE NOT POLISHED. KURARAY, Y-11, 1 MM OUTER DIAMETER, 1 M LONG, MULTICLADDING, WLS FIBER WITH MIRRORED END WAS USED. FIBERS WERE INSERTED INTO SIGMA SHAPED WITHIN A 15 MM RADIUS, TAPERED, 1.2 MM WIDE, RECTANGULAR GROOVES. AFTER FIRST SET OF MEASUREMENTS, FIBERS WERE GLUED INSIDE GROOVES WITH BC-600. CELLS WERE COVERED WITH TYVEK. 2 mC Sr-90 RADIOACTIVE SOURCE, HAMAMATSU R-580 PMT , AND PICOAMMETER WITH GPIB WERE USED. 11/27/2018 JUST BAKED IN NICADD KITCHEN FOR YOU!

JUST BAKED IN NICADD KITCHEN FOR YOU! PRELIMINARY GOALS AND RESULTS THE MAIN GOALS OF THERE MEASUTEMENTS WERE THE FOLLOWING: 1 WHAT AMOUNT OF LIGHT NEW FIBER CAN PROVIDE? 2 WHAT IS THE DIFFIRENCE IN RESPONSE OF CELL WITH 3(4 OR 5) MM THICKNESS? 3 WHAT IS THE SPREAD OF RESPONSES? 1 CELLS PROVIDE RESPONSES FROM 1400 nA to 2400 nA. 2 FOR 3 MM CELLS RESPONSE ARE 1597.6 AND 1724.8 nA (1.08); FOR 4 MM CELLS RESPONSE ARE 1615.5 AND 1779.3 nA (1.10); FOR 5 MM CELLS RESPONSE ARE 1590.8 AND 1853.5 nA (1.17); 3 THE ARERAGE VALUE OF RATIOS OF CELL RESPONSES AFTER/BEFOR GLUING IS 1.135 WITH STANDART DEVIATION 0.074 11/27/2018 JUST BAKED IN NICADD KITCHEN FOR YOU!

JUST BAKED IN NICADD KITCHEN FOR YOU! PRELIMINARY SUMMARY KURARAY Y-11, 1 MM OUTER DIAMETER, MULTICLADDING WLS FIBER PROVIDES THE LARGEST RESPONSE; FOR THESE CELLS THE 3, 4 AND 5 MM THICKNESSES RESPONSES ARE SIMILAR; GLUING PROVIDES ADDITIONAL 14% TO RESPONSE OF THE CELL; GLUING PROVIDES ADDITIONAL SPREAD OF RESPONSES BECAUSE OF AIR BUBLES BETWEEN FIBER AND GROOVE WALL WHERE GLUE CAN NOT PENETRATE. 11/27/2018 JUST BAKED IN NICADD KITCHEN FOR YOU!